CVE-2026-83781CWE-170

CVE-2026-83781

High · published October 13, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
23.5
In the wild
Unconfirmed
What it is

Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00318 · 23.5th percentile
Weakness
CWE-170 · Improper Null Termination
Published
2026-10-13T23:20Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83781 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:00Z
    Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
    cvelistv5